Topic: cb450t top end

[547]

I realize that the guy who has had the engine for my cb450 for the past year is not going to finish it.
It is in pieces on a work bench in his mothers garage. I stopped by there today to see what was up only to find
out that he doesn't even live there anymore. Can't get him on the phone either and he doesn't answer my voice mails.
So I decided to go get the engine this weekend(i hope I can find all my parts).
I need to replace the pistons and put the thing back together.

This is my first time doing this and was wondering if anyone had any good video resources on the basics of rebuilding a dohc top end.

[bryanj]

The 450 (or 500) DOHC is not a beast for the inexperienced to learn on, not least because of the need to use a rivet link in the cam chain and secondary the torsion bar valve springs.

I knew several full time mechanics that avoided these motors

See if there is a forum for them and ask for help on there would be best

[547]

thanks

[tbpmusic]

The 450 (or 500) DOHC is not a beast for the inexperienced to learn on,
I knew several full time mechanics that avoided these motors

See if there is a forum for them and ask for help on there would be best

All true.....

There is help, go here......

http://www.hondatwins.net/forum/index.php

[Bill Vaughan]

Have to agree with the last two posts.  It's a great engine, but not the right one for your first rebuild.  I rebuilt one a few years ago simply for wanting the challenge and to gain an understanding of the now-obsolete valve spring technology used back then.

[lordmoonpie]

It's true they are very hard to work on. Having only recently done my first camchain join on my race CB450 it was a very very tricky operation. I ended up buying a special and very helpful tool to do it though - worth a look at www.cappellinimoto.it